diff --git a/tests/test-encode-decode-ContentObject.html b/tests/test-encode-decode-ContentObject.html
index 1c2cfe0..0f754f7 100644
--- a/tests/test-encode-decode-ContentObject.html
+++ b/tests/test-encode-decode-ContentObject.html
@@ -22,11 +22,7 @@
 			
 			signedInfo.setFields();
 			
-			//witness is null
-			var signature = new Signature();
-			
-			
-			var co = new ContentObject(contentname,signedInfo,content,signature); 
+			var co = new ContentObject(contentname, signedInfo, content); 
 			
 			co.sign();
 			
diff --git a/tests/test-publish-async.html b/tests/test-publish-async.html
index e3844e6..a8c0b66 100644
--- a/tests/test-publish-async.html
+++ b/tests/test-publish-async.html
@@ -33,7 +33,7 @@
 
 				var si = new SignedInfo();
 
-				var co = new ContentObject(new Name(nameStr), si, content, new Signature());
+				var co = new ContentObject(new Name(nameStr), si, content);
 				co.sign();
 
 				upcallInfo.contentObject = co;